“…In the second part of this work, the categories of barriers to success originally posited by Haukkala [28] that involved all relevant stakeholders including industry, utilities, firms, consumers, non-governmental organisations (NGOs), experts, policy makers and professional associations, were revisited and updated. A range of barriers constraining the deployment of solar energy technologies can be categorised, for instance, as technological, economical and institutional [33] or as economic, political, and behavioural [40].…”